NISSAN X-TRAIL 2003 Electronic Repair Manual

DTC P1147 HO2S2
EC-307
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Diagnostic ProcedureEBS00BCC
1.RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 2.
2.CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode
with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 detected?
Is it difficult to start engine?
Wi t h ou t C O N S U LT-I I
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch “OFF”.
3. Disconnect mass air flow sensor harness connector, and restart
and run engine for at least 5 seconds at idle speed.
4. Stop engine and reconnect mass air flow sensor harness con-
nector.
5. Make sure 1st trip DTC P0102 is displayed.
6. Erase the 1st trip DTC memory. Refer toEC-46, "
HOW TO
ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION".
7. Make sure DTC P0000 is displayed.
8. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 detected?
Is it difficult to start engine?
Ye s o r N o
Yes >> Perform trouble diagnosis for DTC P0171. Refer toEC-194.
No >> GO TO 3.
PBIB0494E
SEF215Z
PBIB0495E

EC-308
[QR (WITH EURO-OBD)]
DTC P1147 HO2S2
3.CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect heated oxygen sensor 2 harness connector.
3. Check harness continuity between HO2S2 terminal 3 and
engine ground.
Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to power in harness or con-
nectors.
4.CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 95 and HO2S2 terminal 2.
Refer to Wiring Diagram.
3. Check harness continuity between ECM terminal 95 or HO2S2 terminal 2 and ground.
Refer to Wiring Diagram.
4. Also check harness for short to ground or short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK HEATED OXYGEN SENSOR 2
Refer toEC-308, "
Component Inspection".
OK or NG
OK >> GO TO 6.
NG >> Replace heated oxygen sensor 2.
6.CHECK INTERMITTENT INCIDENT
Refer toEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Component InspectionEBS00BCD
HEATED OXYGEN SENSOR 2
With CONSULT-II
1. Start engine and drive vehicle at a speed of more than 70 km/h (43 MPH) for 2 consecutive minutes.
2. Stop vehicle with engine running.Continuity should exist.
PBIB0500E
Continuity should exist.
Continuity should not exist.

DTC P1147 HO2S2
EC-309
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EC
3. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select
“HO2S2 (B1)” as the monitor item with CONSULT-II.
4. Check “HO2S2 (B1)” at idle speed when adjusting “FUEL INJECTION” to±25%.
“HO2S2 (B1)” should be above 0.68V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)” should be below 0.50V at least once when the “FUEL INJECTION” is-25%.
CAUTION:
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
Without CONSULT-II
1. Start engine and drive vehicle at a speed of more than 70 km/h (43 MPH) for 2 consecutive minutes.
2. Stop vehicle with engine running.
3. Set voltmeter probes between ECM terminal 95 [HO2S2 (B1) signal] and engine ground.
4. Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.68V at least once during this
procedure.
If the voltage is above 0.68V at step 4, step 5 is not neces-
sary.
5. Keep vehicle idling for 10 minutes, then check voltage. Or check
the voltage when coasting from 80 km/h (50 MPH) in “D” posi-
tion with “OD” OFF (A/T), 3rd gear position (M/T).
The voltage should be below 0.50V at least once during this
procedure.
6. If NG, replace heated oxygen sensor 2.
CAUTION:
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in)
onto a hard surface such as a concrete floor; use a new one.
Removal and InstallationEBS00BCE
HEATED OXYGEN SENSOR 2
Refer toEX-2, "EXHAUST SYSTEM".
SEF662Y
PBIB0551E
PBIB0550E

EC-310
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DTC P1212 ESP/TCS/ABS COMMUNICATION LINE
DTC P1212 ESP/TCS/ABS COMMUNICATION LINE
PFP:47850
DescriptionEBS00D0F
NOTE:
If DTC P1212 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
EC-114
.
This CAN communication line is used to control the smooth engine operation during ESP/TCS/ABS operation.
Pulse signals are exchanged between ECM and ESP/ABS/TCS control unit.
Be sure to erase the malfunction information such as DTC not only in ESP/TCS/ABS control unit but
also ECM after the ESP/TCS/ABS related repair.
On Board Diagnosis LogicEBS00D0G
Freeze frame data is not stored in the ECM for this self-diagnosis. The MI will not light up for this self-
diagnosis.
DTC Confirmation ProcedureEBS00D0H
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 10 seconds.
4. If a 1st trip DTC is detected, go toEC-310, "
Diagnostic Proce-
dure".
WITH GST
Follow the procedure "WITH CONSULT-II" above.
Diagnostic ProcedureEBS00D2D
1.CHECK ESP/TCS/ABS CONTROL UNIT FUNCTION
Refer toBRC-60, "
TROUBLE DIAGNOSIS".
>>INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212
1212ESP/TCS/ABS commu-
nication lineECM can not receive the information from
ESP/TCS/ABS control unit continuously.
lHarness or connectors
(The CAN communication line between
ECM and ESP/TCS/ABS control unit is
open or shorted.)
lESP/TCS/ABS control unit
lDead (Weak) battery
SEF058Y

DTC P1217 ENGINE OVER TEMPERATURE
EC-311
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EC
DTC P1217 ENGINE OVER TEMPERATUREPFP:00000
System DescriptionEBS00BCJ
COOLING FAN CONTROL
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
OPERATION
CONSULT-II Reference Value in Data Monitor ModeEBS00BCK
Specification data are reference values.
Sensor Input Signal to PCMECM func-
tionActuator
Wheel sensor Vehicle speed
Cooling
fan controlCooling fan relay(s) Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch Air conditioner “ON” signal
Ignition switch Start signal
Refrigerant pressure sensor Refrigerant pressure
PBIB0576E
MONITOR ITEM CONDITION SPECIFICATION
AIR COND SIG
lEngine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON

EC-312
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DTC P1217 ENGINE OVER TEMPERATURE
ECM Terminals and Reference Value
EBS00BCL
Specification data are reference values and are measured between each terminal and body ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
On Board Diagnosis LogicEBS00BCM
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer toCO-9, "
Changing Engine
Coolant". Also, replace the engine oil. Refer toLU-8, "Changing Engine Oil".
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer toMA-19, "
Engine Coolant Mixture Ratio".
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckEBS00BCN
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
COOLING FAN
lEngine: After warming up, idle
the engine
lAir conditioner switch: OFFEngine coolant temperature is 94°C
(201°F) or lessOFF
Engine coolant temperature is
between 95°C (203°F) and 104°C
(219°F)LOW
Engine coolant temperature is 105°C
(221°F) or moreHIGH MONITOR ITEM CONDITION SPECIFICATION
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
27 LG/BCooling fan relay
(High)[Engine is running]
lCooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
lCooling fan is high speed operating0-1.0V
37 LGCooling fan relay
(Low)[Engine is running]
lCooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
lCooling fan is operating0-1.0V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217
1217Engine over tempera-
ture (Overheat)
lCooling fan does not operate properly (Over-
heat).
lCooling fan system does not operate prop-
erly (Overheat).
lEngine coolant was not added to the system
using the proper filling method.
lHarness or connectors
(The cooling fan circuit is open or
shorted.)
lCooling fan
lRadiator hose
lRadiator
lRadiator cap
lWater pum p
lThermostat
For more information, refer toEC-323,
"Main 12 Causes of Overheating".

DTC P1217 ENGINE OVER TEMPERATURE
EC-313
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WA RN ING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go toEC-316,
"Diagnostic Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go toEC-316,
"Diagnostic Procedure".
3. Turn ignition switch “ON”.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. If the results are NG, go toEC-316, "
Diagnostic Procedure".
WITH GST
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go toEC-316,
"Diagnostic Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go toEC-316,
"Diagnostic Procedure".
3. Start engine.
Be careful not to overheat engine.
4. Set temperature control lever to full cold position.
5. Turn air conditioner switch “ON”.
6. Turn blower fan switch “ON”.
7. Run engine at idle for a few minutes with air conditioner operating.
Be careful not to overheat engine.
SEF621W
SEF646X
SEF621W

EC-314
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DTC P1217 ENGINE OVER TEMPERATURE
8. Make sure that cooling fan operates at low speed.
If NG, go toEC-316, "
Diagnostic Procedure".
If OK, go to the following step.
9. Turn ignition switch “OFF”.
10. Turn air conditioner switch and blower fan switch “OFF”.
11. Disconnect engine coolant temperature sensor harness connector.
12. Connect 150Wresistor to engine coolant temperature sensor harness connector.
13. Restart engine and make sure that cooling fan operates at
higher speed than low speed.
Be careful not to overheat engine.
14. If NG, go toEC-316, "
Diagnostic Procedure".
SEC163BA
MEC475B

DTC P1217 ENGINE OVER TEMPERATURE
EC-315
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Wiring DiagramEBS00BCO
TBWA0071E

EC-316
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DTC P1217 ENGINE OVER TEMPERATURE
Diagnostic Procedure
EBS00BCP
1.INSPECTION START
DoyouhaveCONSULT-II?
Ye s o r N o
Yes >> GOTO2
No >> GOTO4
2.CHECK COOLING FAN LOW SPEED OPERATION
With CONSULT-II
1. Disconnect cooling fan relays-2 and -3.
2. Turn ignition switch “ON”.
3. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
4. Make sure that cooling fans-1 and -2 operate at low speed.
OK or NG
OK >> GO TO 3.
NG >> Check cooling fan low speed control circuit. (Go toEC-319, "
PROCEDURE A".)
PBIB0505E
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